package com.carey.myblog.handler;

import lombok.extern.slf4j.Slf4j;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;

@ControllerAdvice
@Slf4j
public class ControllerExceptionHandler {
    @ExceptionHandler(Exception.class)
    public ModelAndView exceptionHandler(HttpServletRequest request, Exception e) throws Exception {
        log.error("Request URL : {}, Exception : {}", request.getRequestURL(), e);
        //判断异常是否自定义被指定，如果被指定则不为空，抛出被指定异常
        if (AnnotationUtils.findAnnotation(e.getClass(),
                ResponseStatus.class) != null) {
            throw e;
        }
        ModelAndView mv = new ModelAndView();
        mv.addObject("url", request.getRequestURL());
        mv.addObject("Exception", e);
        mv.setViewName("error/error");
        return mv;
    }
}
